53 visiting now: 30 USA 
10 Singapore 
6 UK 
2 Brazil 
2 China 
2 France 
2 India 
2 Belgium 
1 Argentina 
1 Ukraine 
1 Australia 
1 Iraq 
1 Mexico 
10 Singapore 6 UK 2 Brazil 2 China 2 France 2 India 2 Belgium 1 Argentina 1 Ukraine 1 Australia 1 Iraq 1 Mexico